不同的LINQ？ [英] Distinct in linq?

问题描述

我想知道我怎么能做到这一点？

I am wondering how can I achieve this?

我想从对象集合

MyObject a = new Object();
a.Name = 'One';
a.Value = '10';


MyObject b = new Object();
b.Name = 'One';
b.Value = '15';


MyObject c = new Object();
c.Name = 'Two';
c.Value = '10';

所以我想只得到回名。我不在乎在这种情况下，仅仅是名称的值。

So I want to get only back the name. I don't care about the value in this case just the name.

所以，我想

// 。所有对象添加到集合

//add all the objects to a collection.

myCollection.Disinct()..Select(x => new MyClassToStore() {Text = x.Name, Value = x.Name}).ToList());

不过，我需要在对象级别的属性层次做不同的不行。所以，我想回去一和二​​。现在，我得到一，一和二​​了。

However I need to do distinct at the property level not at the object level. So I want back "One" and "Two". Right now I get "One", "One" and "Two" back.

我看到一个名为库的 morelinq ，但我不知道我是否应该仍处于测试阶段使用它，因为它，似乎并没有被上再发展。

I see a library called morelinq but I not sure if I should use it as it still in beta and does not seem to be developed on anymore.

另外一个提取查询全库，我不知道这是否是值得的。

Plus a whole library for one extract query I am not sure if it is worth it.

推荐答案

本填充两种文本和值字段：

This populates both the Text and Value fields:

   myCollection.Select(x => x.Name).Distinct()
      .Select(x => new MyClassToStore { Text = x, Value = x }).ToList();

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